The centrality of the Lehrstück (learning play) to Brechtian theory was only slowly understood by a wider circle of international, critical audiences. Whether it was the lack of a comprehensive theory dealing with these works, or the Cold War hangover that rendered their texts particularly unpalatable, the result was a more-or-less total misunderstanding of this group of plays written between 1926 and 1933. A prominent and influential example of misreading was Martin Esslin's interpretation of the learning plays in his book Brecht: The Man and His Work. It is significant that Esslin translated the term Lehrstück as 'didactic plays', because in his view Brecht was writing communist thesis if not propaganda plays. Not until 1972, when Reiner Steinweg published his first volume dedicated to the construction of a coherent theory of the Lehrstück, which Brecht had provided in fragments and sketches only, was the relation of the learning plays to the rest of Brecht's work fully appreciated.